The Quiet Side by Casey Blair

She’s always flying toward the next shiny idea. He’s resolve incarnate—literally.
Now they’re stuck together in an isolated mountain cottage with only one bed.
When Kovan, the strongest living avatar of a god, is tasked with removing a magical field preventing priests from wreaking destruction unchecked, he defects, leaving behind everything he knew for the sanctuary of the Quiet side.

Alone for the first time and unable to work the magic that has defined his life, Kovan finds Tasa, who has made her home on the mountain at the Quiet’s heart and knows about everything—unlike Kovan, who no longer knows how to do anything that matters, from baking bread to protecting her, let alone the Quiet side.
Tasa takes Kovan in despite the risk to her safe haven because no matter how his belief in her makes her feel, Kovan isn’t staying. No one ever does, and he’ll have more important places to be once he learns to stand on his own.
But when the priests come looking for Kovan, the sanctuary they’re creating one loaf of bread at a time is at risk… unless they can discover their real strength together.